Spinning ring and shield



May 31, 1932. H. B. STUART SPINNING RING AND SHIELD Filed Dec. 7, 1951 INVENTOR.

ATTORNEYS Patented May 31, 1932 UNITED STATES PATENT OFFICE HENRY B.STUART, OF WHITINSVILLE, MASSACHUSETTS, ASSIGNOB T0 WHITIN MACHINEWORKS, OF WHITINSVILLCE, MASSACHUSETTS, A CORPORATION OF MASSA-CI-IUSETTS SPINNING RING AND SHIELD Application filed December 7, 1931.Serial No. 579,618.

This invention relates to rings and ring travelers used in spinning andtwisting machines. VVhen spinning or twisting yarn at high speed, it isdesirable to lubricate the inner faces of the rings in order to reducetraveler friction. Broken ends of thread sometimes wipe across theselubricated surfaces and transfer the oil and dirt to one or moreadjacent bobbins, thus injuring the yarn which has been previously woundon the bobbins.

It is the object of my invention to provide an improved device forprotecting the threads and bobbins from any oil, grease or dirt whichmight otherwise be thrown off by the traveler or transferred by a brokenend of thread.

To the accomplishmentof this object, Iprovide a cylindrical shieldinterposed between the ring and the bobbin, together with improved meansfor holding the shield in fixed relation to the ring and to the ringholder.

My invention further relates to arrange ments and combinations of partswhich will be hereinafter described and more particularly pointed out inthe appended claims.

A preferred form of the invention, together with a modification thereofis shown in the drawings, in which Fig. l is a plan view of a spinningring and holder having my invention applied thereto;

Fig. 2 is a side elevation of the parts shown in Fig. 1;

Fig. 3 is a sectional side elevation, taken along the line 3-8 in Fig.1;

Fig. 4 is an enlarged detail sectional side elevation;

Fig. 5 is a plan view of a ring and holder to which my invention hasbeen applied in a modified form;

Fig. 6 is a sectional side elevation, taken along the line 6-6 in Fig.5;

Fig. 7 is a plan view of the shield shown in Figs. 5 and 6, and

Fig. 8 is a sectional side elevation of the shield, taken along the line8-8 in Fig. 7.

Referring to Figs. 1 to 4, I have shown a portion of a ring rail 10 inwhich a split ring holder 11 is secured by a clamping screw 12. Theupper surface of the holder 11 is provided with an undercut recess 14adapted to receive the lower flange of a reversible flat top ring 20. Atraveler T snaps on to the upper flange of the ring 20 in the usual wayand travels at high speed around the ring during the spinning ortwisting of the thread. The parts thus far described are of a usualcommercial form.

My improved shield 22 is mounted within the ring 20 and comprises acylindrical upwardly extending portion 24 and an outwardly extendinghorizontal flanged portion 25.

The ring holder 11 is provided with a second annular recess 30 in itsupper face, adapted to receive and center the horizontal flange 25 ofthe shield 22. This flange is of such thickness that its upper surfacewill be engaged by the lower surface of the bottom flange of the ring 20when the ring is secured in the holder 11 by tightening the screw 12.

When thus secured, the shield 22 is firmly held in fixed position andthe cylindrical portion 24 thereof is accurately centered with respectto the ring 20, with the upper edge portion of the flange 24 spacedsomewhat inwardly from the top flange of the ring and preferablydisposed slightly below the upper surface of the top flange.

With the shield 22 in the described position, clearance is provided forthe traveler T and for the yarn but the shield protects the innersurface of the ring to which lubricant may have been applied and inparticular prevents a broken end of thread from engaging and wipingacross a lubricated and more or less dirty surface.

In the form shown in Figs. 5 to 8, I use a sheet metal ring holder 40having spaced ears 41 by which the ring 20 is centered and secured. Inthis case the shield 42 is provided with a somewhat wider horizontalflange 43 having spaced notches 44 (Fig. 7). These notches 44 receivethe ring-holding ears 41 and the shield 42 is centered and held fromrotation by the ears 41, which extend upward through the notches 44 toengage the lower flange of the ring 20, as with the usual sheet metalring holder.

In both described constructions it will be seen that the horizontalflange of the shield is clamped between an upper surface of the holderand an under surface of the ring, and that provision is made foraccurately centering the shield with respect to the ring and holder.

Furthermore, it will be obvious that the same holders may be used forholding the rings 20 with the shields 22 or 42 in place or omitted. Inthe construction shown in Figs. 1 to 4, the ring is held in the undercutrecess 14 in exactly the same manner, whether or not the shield is used,and in the construction shown in Figs. 5 to 8 it is merely necessary tobend the ears 41 slightly downward to firmly engage and center the ringif the shield 42 is omitted.

Having thus described my invention and the advantages thereof, I do notwish to be limited to the details herein disclosed, otherwise than asset forth in the claims, but what I claim is 1. Spinning or twistingmechanism comprising a reversible flat top ring, a holder therefor, anda shield having an outwardly extended horizontal flange clamped betweenan upper surface of said holder and a lower surface of said ring, saidshield also having a cylindrical portion extending upward substantiallyto the upper flange of said ring and spaced inwardly therefrom.

2. The combination in spinning or twisting mechanism as set forth inclaim 1, in which the holder has a circular recess in its upper surfaceto receive the outer portion of the horizontal flange of the shield,thereby centering the shield with respect to the ring.

3. The combination in spinning or twisting mechanism as set forth inclaim 1, in which the holder has spaced ring-engaging ears and in whichthe horizontal flange of the shield is notched to receive said ears andis centered and held from rotation thereby.

In testimony whereof I have hereunto affixed my signature.

HENRY B. STUART.

